Source Code Cross Referenced for ExtApplication.java in  » Workflow-Engines » wfmopen-2.1.1 » de » danet » an » workflow » internalapi » Java Source Code / Java DocumentationJava Source Code and Java Documentation

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Java Source Code / Java Documentation » Workflow Engines » wfmopen 2.1.1 » de.danet.an.workflow.internalapi 
Source Cross Referenced  Class Diagram Java Document (Java Doc) 


001:        /*
002:         * This file is part of the WfMOpen project.
003:         * Copyright (C) 2001-2003 Danet GmbH (www.danet.de), GS-AN.
004:         * All rights reserved.
005:         *
006:         * This program is free software; you can redistribute it and/or modify
007:         * it under the terms of the GNU General Public License as published by
008:         * the Free Software Foundation; either version 2 of the License, or
009:         * (at your option) any later version.
010:         *
011:         * This program is distributed in the hope that it will be useful,
012:         * but WITHOUT ANY WARRANTY; without even the implied warranty of
013:         * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014:         * GNU General Public License for more details.
015:         *
016:         * You should have received a copy of the GNU General Public License
017:         * along with this program; if not, write to the Free Software
018:         * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
019:         *
020:         * $Id: ExtApplication.java,v 1.1 2007/05/03 21:58:21 mlipp Exp $
021:         *
022:         * $Log: ExtApplication.java,v $
023:         * Revision 1.1  2007/05/03 21:58:21  mlipp
024:         * Internal refactoring for making better use of local EJBs.
025:         *
026:         */
027:        package de.danet.an.workflow.internalapi;
028:
029:        import java.io.Serializable;
030:
031:        import java.rmi.RemoteException;
032:        import java.util.Map;
033:
034:        import de.danet.an.workflow.api.Activity;
035:        import de.danet.an.workflow.api.Application;
036:
037:        import de.danet.an.workflow.spis.aii.ApplicationNotStoppedException;
038:        import de.danet.an.workflow.spis.aii.ToolAgentContext;
039:
040:        /**
041:         * This interface defines additional methods for applications
042:         * used by the implementation classes.
043:         *
044:         * @author <a href="mailto:lipp@danet.de">Michael Lipp</a>
045:         * @version $Revision: 1.1 $
046:         */
047:
048:        public interface ExtApplication extends Application {
049:
050:            /**
051:             * Returned by {@link #invoke <code>invoke</code>} if the tool
052:             * agent returns a result.
053:             */
054:            public static class InvocationResult implements  Serializable {
055:                private Object res;
056:
057:                /**
058:                 * Create a new invocation result with the given value.
059:                 * @param result the result
060:                 */
061:                public InvocationResult(Object result) {
062:                    res = result;
063:                }
064:
065:                /**
066:                 * Return the result value passed to the constructor.
067:                 * @return the result
068:                 */
069:                public Object result() {
070:                    return res;
071:                }
072:            }
073:
074:            /**
075:             * Invokes the application for the specific activity.
076:             *
077:             * @param agentContext the context to pass to the tool agent
078:             * agent
079:             * @param activity the activity to be executed
080:             * @param params the invokation parameters
081:             * @return the invocation result if the tool agent provides one
082:             * (i.e. implements <code>ResultProvider</code>), else <code>null</code>
083:             * @throws ToolInvocationException if execution is not possible
084:             * @throws RemoteException if a temporary problem occurs and we
085:             * should retry the tool invocation. (Usually thrown when a
086:             * deadlock situation occurs while accessing the activity.)
087:             */
088:            InvocationResult invoke(ToolAgentContext agentContext,
089:                    Activity activity, Map params)
090:                    throws ToolInvocationException, RemoteException;
091:
092:            /**
093:             * Terminates the application for the specific activity.
094:             *
095:             * @param activity the activity
096:             * @throws ApplicationNotStoppedException if execution is not possible
097:             * @throws RemoteException if a temporary problem occurs and we
098:             * should retry the tool invocation. (Usually thrown when a
099:             * deadlock situation occurs while accessing the activity.)
100:             */
101:            void terminate(Activity activity)
102:                    throws ApplicationNotStoppedException, RemoteException;
103:
104:            /**
105:             * Return <code>true</code> is the tool agent implements {@link
106:             * de.danet.an.workflow.tools.util.DirectInvocable
107:             * <code>DirectInvocable</code>}.
108:             *
109:             * @return the result
110:             */
111:            boolean isDirectInvocable();
112:        }
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